US3690386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angle and tilt mechanism for dozer blade
Assignee: Case LLC
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Filing: 1970-08-05
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Granted: 1972-09-12
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Expires: 1990-08-05
Abstract
Abstract A mechanism for an angling and tilting dozer blade in which the dozer is provided with a blade supporting frame and the blade is universally pivotally connected to the front end of the frame within a vertical plane containing the longitudinal axis of the dozer; the opposite lower corners of the blade are pivotally connected by links to the blade supporting frame and the links are longitudinally slidably supported on the frame to thereby angularily reposition the blade when the links are actuated; an extendable link is provided positioned along the rear-side of the blade and towards one side of the blade from the blade center for pivotal connection of the blade to the front end of the frame to tilt the blade around an axis normal to the longitudinal axis of the dozer when the extendable link is actuated. Actuation of the links may be manual or by fluid power.
Inventors
- 👤 Kenneth L Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:15
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609; E02F3/7618
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
357 words
In combination with a ground working machine having a longitudinal axis; a frame pivoted on said machine on an axis transverse to the longitudinal axis; and a ground moving blade pivotally attached to said frame; the improvement comprising: a universal joint connecting a generally upper portion of said blade to said frame and disposed in a vertical a pair of longitudinally movable links disposed on opposite sides of said frame, each of said pair of links being pivotally connected to said frame and to opposite lower corners of said blade at the rear thereof; each of said movable links being oppositely slidable on said frame so that by slidable extension of one of said links and simultaneous slidable retraction of the other of said links said blade will be angularly moved around a vertical axis of said universal joint; adjustment means adapted to oppositely slide said links, on said frame, to angularly adjust the blade; a third extendable link disposed between the frame and said blade and pivotally connected to said blade and to said frame; said third extendable link extending along an axis substantially normal to said longitudinal axis and operable upon extension or retraction to tilt said blade in either direction around a horizontal ai axis intersecting said vertical axis within said universal joint; said frame comprises a U-shaped structure having a pair of legs disposed on opposite sides of said machine and extending forwardly; the free ends of the legs being pivotally connected to said machine for selectively lowering or raising said frame relative to a ground surface; the other ends of said legs being connected by a transverse portion extending forwardly across said machine; said third extendable link comprising a first member pivotally connected to said transverse portion of said frame below said universal joint, and a second member longitudinally movable relative to said first member for selective extension or contraction relative thereto; the free end of the said second member being universally pivotally connected to said blade towards one side thereof and in a plane intermediate said universal joint and a said pivotal connection of said pair of links to said blade.
Claim 2
Dependent Claim
357 words
In combination with a ground working machine having a longitudinal axis; a frame pivoted on said machine on an axis transverse to the longitudinal axis; and a ground moving blade pivotally attached to said frame; the improvement comprising: a universal joint connecting a generally upper portion of said blade to said frame and disposed in a vertical a pair of longitudinally movable links disposed on opposite sides of said frame, each of said pair of links being pivotally connected to said frame and to opposite lower corners of said blade at the rear thereof; each of said movable links being oppositely slidable on said frame so that by slidable extension of one of said links and simultaneous slidable retraction of the other of said links said blade will be angularly moved around a vertical axis of said universal joint; adjustment means adapted to oppositely slide said links, on said frame, to angularly adjust the blade; a third extendable link disposed between the frame and said blade and pivotally connected to said blade and to said frame; said third extendable link extending along an axis substantially normal to said longitudinal axis and operable upon extension or retraction to tilt said blade in either direction around a horizontal ai axis intersecting said vertical axis within said universal joint; said frame comprises a U-shaped structure having a pair of legs disposed on opposite sides of said machine and extending forwardly; the free ends of the legs being pivotally connected to said machine for selectively lowering or raising said frame relative to a ground surface; the other ends of said legs being connected by a transverse portion extending forwardly across said machine; said third extendable link comprising a first member pivotally connected to said transverse portion of said frame below said universal joint, and a second member longitudinally movable relative to said first member for selective extension or contraction relative thereto; the free end of the said second member being universally pivotally connected to said blade towards one side thereof and in a plane intermediate said universal joint and a said pivotal connection of said pair of links to said blade.
Claim 3
Dependent Claim
96 words
In the combination as defined in claim 1, each of said legs being provided with a longitudinal slot along the lateral outer side thereof; sliding blocks slidably disposed within said slots; each of said sliding g blocks carrying a ball stud extending therefrom; socket means on the end of each of said pair of links for pivotal connection of said links to said ball studs on said sliding blocks; and means to selectively move said sliding blocks in opposite directions within said slots to thereby angle said blade around a vertical axis of said universal joint.
Claim 4
Dependent Claim
62 words
In the combination as defined in claim 1, said first member being a fluid cylinder and said second member being a piston rod reciprocably diSposed therein; and fluid power means to actuate said fluid cylinder to selectively extend or retract said piston rod to thereby tilt said blade around longitudinal axis intersecting said vertical axis at the center of said universal joint.
Claim 5
Dependent Claim
241 words
A tilting and angling mechanism for the blade of an earth moving machine having a blade supporting frame, said frame being of substantial U-shape comprising a pair of parallel arms extending along opposite sides of said machine for pivotal connection thereto and a transverse bight portion connecting the other ends of said arms in front of said machine, said transverse bight portion adjustably supporting a material moving blade; means to universally pivotally connecting said blade to said bight portion at the center thereof midway between the ends of said blade and adjacent the upper edge thereof to permit angular adjustment of said blade about intersecting axis; a pair of links each of which being pivotally connected to a respective one of said arms and the lower edge of said blade; said pair of links being individually, longitudinally adjustable along said arms to thereby cause angling of said blade about a vertical axis when said links are longitudinally moved in opposite directions; and an extendable link extending in longitudinal direction of said blade comprising a first member universally, pivotally connected to the bight portion of said frame and a second member longitudinally movable relative to said first member and universally, pivotally connected to said blade at one side thereof so that upon selective extension or contraction of said extendable link said blade will be tilted about an axis longitudinally of said machine and intersecting said vertical axis within said universal pivoting means.
Claim 6
Dependent Claim
241 words
A tilting and angling mechanism for the blade of an earth moving machine having a blade supporting frame, said frame being of substantial U-shape comprising a pair of parallel arms extending along opposite sides of said machine for pivotal connection thereto and a transverse bight portion connecting the other ends of said arms in front of said machine, said transverse bight portion adjustably supporting a material moving blade; means to universally pivotally connecting said blade to said bight portion at the center thereof midway between the ends of said blade and adjacent the upper edge thereof to permit angular adjustment of said blade about intersecting axis; a pair of links each of which being pivotally connected to a respective one of said arms and the lower edge of said blade; said pair of links being individually, longitudinally adjustable along said arms to thereby cause angling of said blade about a vertical axis when said links are longitudinally moved in opposite directions; and an extendable link extending in longitudinal direction of said blade comprising a first member universally, pivotally connected to the bight portion of said frame and a second member longitudinally movable relative to said first member and universally, pivotally connected to said blade at one side thereof so that upon selective extension or contraction of said extendable link said blade will be tilted about an axis longitudinally of said machine and intersecting said vertical axis within said universal pivoting means.
Claim 7
Dependent Claim
107 words
In the mechanism as defined in claim 4, in which said universal pivoting means comprises a ball and socket joint; each of said arms being provided with a longitudinal slot at the outer side thereof; a block slidably disposed in each of said slots and each of which being provided with a ball stud; socket means at one end of each of said pair of links for pivotal connection of said links to said ball studs on said blocks; and means to selectively move said sliding blocks in opposite directions within said slots to thereby angle said blade around a vertical axis of said universal pivoting means.
Claim 8
Dependent Claim
66 words
In the mechanism as defined in claim 4, said first member of said extendable link comprising a fluid cylinder and said second member of said extendable link comprising a piston reciprocably disposed within said fluid cylinder; and fluid power means to actuate said fluid cylinder to selectively extend or retract said piston rod to thereby tilt said blade around a longitudinal axis intersecting said vertical axis.
Claim 9
Dependent Claim
136 words
A three point pivotal attachment arrangement for a material moving blade of a dozer having a blade supporting frame comprising a pair of oppositely disposed push arms pivotally connected to said dozer; first means defining a first pivot point disposed adjacent the upper edge of said blade and centrally thereof to universally, pivotally connect said blade to said frame; second and third means pivotally connecting opposite lower corners of said blade to said push arms, said pivotal connections defining a second and third pivot point respectively; and an extendable link disposed between said frame and said blade and pivotally connected to both; said extendable e link being disposed alongside said blade towards one side thereof; and means causing selective extension or contraction of said extendable link to thereby tilt said blade about said first pivot point.
Claim 10
Dependent Claim
136 words
A three point pivotal attachment arrangement for a material moving blade of a dozer having a blade supporting frame comprising a pair of oppositely disposed push arms pivotally connected to said dozer; first means defining a first pivot point disposed adjacent the upper edge of said blade and centrally thereof to universally, pivotally connect said blade to said frame; second and third means pivotally connecting opposite lower corners of said blade to said push arms, said pivotal connections defining a second and third pivot point respectively; and an extendable link disposed between said frame and said blade and pivotally connected to both; said extendable e link being disposed alongside said blade towards one side thereof; and means causing selective extension or contraction of said extendable link to thereby tilt said blade about said first pivot point.
Claim 11
Dependent Claim
22 words
In the arrangement as defined in claim 7, said first means defining a first pivot point comprising a ball and socket joint.
Claim 12
Dependent Claim
55 words
In the arrangement as defined in claim 7, said second and third means comprising a pair of links, each of which slidably pivotally supported on a respective one of said arms for selective individual sliding movement therealong in opposite Longitudinal directions to thereby angularily repositioning said blade relative to a longitudinal axis of said dozer.
Claim 13
Dependent Claim
87 words
In the arrangement as defined in claim 7, said extendable link comprising a fluid cylinder and a piston rod slidably disposed therein; said fluid cylinder being pivotally connected to said frame and said piston rod being pivotally connected to said blade; below the level of the frame and fluid power means to actuate said fluid cylinder to selectively extend or retract the piston rod to thereby tilt said blade around an axis of said first pivot point intersecting the pivot axis of angular repositioning of said blade.
References Cited (Backward Citations)
US2734292A
Cited
US2681518A
Cited
US2749630A
Cited
US2943407A
Cited
US3002300A
Cited
US3213553A
Cited
US3222804A
Cited
US3631930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |